Immunogen sequence: CISFELLGLS TFDFLKDNNY LPYPIHQVRH MAFQLCQAVK FLHDNKLTHT DLKPENILFV NSDYELTYNL EKKRDERSVK STAVRVVDFG SATFDHEHHS TIVSTRHYRA PEVILELGWS QPCDVWSIGC IIFEYYVGFT LFQTHDNREH LAMMERILGP IPSRMIRKTR KQKYFYRGRL DWDENTSAGR YVRENCKPLR RYLTSEAEEH HQL